Ser. CHLOROSPERMES. Fam. Chetophoree. 
Puate CCXXVI. 
OCHLOCHATE HYSTRIX, Zw. Mss. 
Gen. Cuan. Frond disciform, adpressed. Filaments cylindrical, radiating 
from a central point, irregularly branched, consisting of a single series 
of cells, each of which is most commonly produced above into a rigid 
inarticulated seta. Hndochrome green. Fructification unknown. 
OcutocuarEe (Thw., MSS.)\—from éyros, a multitude, and xairn, a 
bristle. 
Ocutocuate Hystrix; plant very minute, pale green, hoary from its 
numerous rigid sete. 
Has. On stems of grasses &c., in a lake of brackish water, called “'The 
Little Sea,” near Wareham, Dorset, Rev. W. Smith; also in fresh- 
water ditches near Bristol, upon the leaves of mosses; very rare. 
G. H. K. Thwaites. 
Descr. Plant disciform, frequently irregular in its outline, very minute, pale 
green, hoary from the multitude of rigid sete with which it is covered. 
Filaments closely adpressed and adhering firmly to the substance on which 
the plant may be growing; radiating from a central point, irregularly 
branched, and frequently cohering laterally. Ce//s oblong, each usually 
furnished with a very long rigid tubular diaphanous seta. Endochrome 
granular, green. The fructification has not been observed. It is possible 
that the fresh-water specimens from the neighbourhood of Bristol may 
prove specifically distinct from the Wareham plant. 
ae 
For the present we have placed Och/ochete with the Cheto- 
phoree, from which family, however, it will eventually have to 
be removed, since it differs from Chetophora (that is, the typical 
species C. elegans,* Ag.) and Draparnaldia in some important 
* Chetophora elegans, Ag. in the state of fruit is evidently the Gongrosira 
sclerococcus of Kiitzing, whilst the same species with opseospermata appears to 
be the Chetophora longeva of Carmichael. From the inspection of an authentic 
specimen of Chetophora pisiformis, Ag., kindly given to me by my friend, the 
Rev. M. J. Berkeley, I have ascertained that this species is by no means con- 
generic with C. elegans, Ag., but has the fruit and sete of Coleochete, from which 
genus it would seem to be separated only by its erect, free, not adpressed 
filaments: and there can be little doubt, therefore, that Chetophora tuberculosa, 
Ag., is equally allied to Coleochete. Chetophora Berkeleyi of Dr. Greville, and 
C. pellita, Lyngbye, have already been figured in the present work under the 
names respectively of Leathesia Berkeleyi, Harv., and Cruoria pellita, Fries; the 
former being closely allied to Hlachistea, especially to E. scutulata, Fries; and 
the latter having an affinity rather with the Nostochinee.—Thwaites. 
